How a Storm bolt can subscribe to the __tick stream.

Configuration can be applied to the entire topology or any component individually. For example, to enable tick tuples for a singe Bolt do

Config boltConfig = new Config();
boltConfig.put(Config.TOPOLOGY_TICK_TUPLE_FREQ_SECS, 30);
builder.setBolt("my-awesome-bolt", new MyAwesomeBolt()).addConfigurations(boltConfig );